Separating the effects of nature and nurture is challenging because they interact in complex ways to shape human development; most traits and behaviors result from a combination of both genetic predispositions and environmental influences. 4 How do twin studies contribute to understanding the balance of...
Methods We performed a heritability analysis for hyperuricemia and gout among 514 unselected, all-male twin pairs who were a part of the National Heart, Lung, and Blood Institute twin study, a prospective observational cohort study. Statistical analyses were performed using structural equation models ...
"There has still been conjecture over how much variation is caused by genetics and how much is caused by environmental factors—what people call nature versus nurture," Dr Benyamin said. "We wanted to resolve that by revisiting almost all the genetic twin studies conducted over the past 50 yea...
Nature-Nurture Interactions in Alcoholism Twin, Adoption, and High-Risk Studies The nature-nurture discussion of the etiology of alcoholism has been strengthend by new research strategies, namely twin and adoption studies. In this ... Joachim,Knop - 《Nordic Journal of Psychiatry》 被引量: 0发...
while natural siblings are more alike than adopted siblings. This suggests that personality is partially heritable, but eventually nurture plays a role in how these traits are shaped.Adopted Studieson the other hand showed that even when these siblings are reared in the same family environment, by...
Figure 2. Studies focused on twins have lead to important insights about the biological origins of many personality characteristics. [Photo: ethermoon]Another option for observing nature-nurture in humans involves twin studies. There are two types of twins: monozygotic (MZ) and dizygotic (DZ). Mo...
Nature and nurture in infant appetite: analysis of the Gemini twin birth cohort Background: A strong genetic influence on appetitive traits has been shown in children and adults, but no studies have examined appetite in early infancy, ... CH Llewellyn,van Jaarsveld Cornelia HM,J Laura,... -...
nature versus nurture The perennial argument as to whether heredity or environment is more influential in determining the outcome of any individual's development. It is now apparent that the two are so intimately inter-related in their effects as to almost inseparable. ...
Aside from the amazing story, the film is blessed to have as its subjects two such charismatic young women. Sam, the bubblier of the two, has an offbeat sense of humor and a fearless attitude towards life. Anais is less extroverted, as an evaluation the two take as part of twin researc...
Twin and adoption studies are two instances of a much broader class of methods for observing nature-nurture called quantitative genetics, the scientific discipline in which similarities among individuals are analyzed based on how biologically related they are. We can do these studies with siblings and...